Self-closing liquid shut-off.



. H. MUELLER & A. SGHUERMANN.

SELF GLOSING LIQUID SHUT-OFF.

APPLIOATION FILED JAN. 24, 190e.

I "'Illllll To all whom it may concern:

.and Fig. 3 is a detailv ol' the roller beariiw 3 UNITED srAfrns-M rarnnr orrron..

nigNBvMUELLER gnb ANTON scnusannuu, or nreArUn, iLLiNois, Assrcnoas 'ro n.

No. 'Y

s Application tiled January 24, 1906.

Be it known that we, HENRY MUELLER and ANTON SoHUERMANN,"residents .of the city of Decatur', county of Macon, and State of Illinois, have invented certain new and useful Improvements in Self-Closing Liquid Shut-Offset which the following is a specification.' o,

This invention is particularly'applicable lto self-closing basin cocks and its objeotsiare,

explained in the subjoined detail description..

he invention is exemplified in the struc-Y ture hereinafter described and it is defined in the appended claims.

vIn the drawings forming part of this s )celtica-tion Figure l is a vertical section through a basin cock embodying our i1nproveniente; the. valve of the. cook being shown closed. Fig. 2 is a broken section through the cock, showing the valve open,

' with which the cock is preferably provided.

General features of the cock are follows: The cock body 1 has the upward extellsimi l, the 'lo\\'n\\f'ard\ extension lb and the laterally-projeeting spout 2. partition is placed between the downward extension 1b and the spout chamber anda passage way is fornied through the partition. A valve seat 3 is formed around the passage way on the under surface of the partition, A rap o is screwed onto th upward extension of tlie cock body and it is apert-ured centrally at its upper end to receivethe shank b.

Specification of Letters Patent.

The shank S has a handle 1() on its upper end and a disk t) on f its'lower end. The disk t) has a set of incline-S on its upper surface and the upper end of cap 6 has a eorrespoiuling;` set of inclines 7 on its under surface. A set of rollers 12 is interposed between the opposing inclines, in a manner to be hereinafter explained, and they provide means for coverting rotary rnotion ofthe shank 8 into longitudinal motion thereof. A base 13 is screwed onto the` downward extension of the cock body and it has'A an inlet opening through which the .fluid flows upward, or toward the valve seat. Y

The 'novel'features of the structure coinpii'se the following details: Centrally within said'base 13 is disposed a plug 14 which is somewhat smaller than the interior of the downward extension 1b so as to leave an an- MUELLER MANUFACTURING COMPANY, or nnoii'frua, iLLmois', A conroa'afriou or SELF-cansino nraiurn snor-ons.

APatented. pril 6, 1.909.

Serial No. 297,707.

herein the plug hasa tubular shank which is screwed into the base and has lateralinlet passages 15 connecting the bore of the base with said annular space, while the upper end of the plug is closed and made cup-shaped to form a chamber 20. Fitting slidably and' somewhat loosely around the plug is a shell 17 which is also snialler than the inte'rior bore of the downward extension 1b so as to leave the annular inlet passage. 'i his shell is closed at its upper end as by a partition from whose center rises a connection, here shown as ascrew 19 which projects throu h the valve seat and takes into the enlarge lower end 16a of the valve stem 16; and the valve proper 18 (which may be of rubber) is clamped between said partition and the lower end ofthev stein and is adapted to close against the seat 3. Between the larger portion 16t1 and the smaller portion 16 of said stern is formed a shoulder which supports a collar 17, the latter iitting slidably but closely within the bore 4 of the upward extension 1 of the body, and a by-pass5 leads obliquely froni the chamber above said collar into the spout 2 so as to discharge through the latter whatever water may accumulate above the collar as well understood. With this construction, the parts of the valve stand closed. as shown in Fig. 1, ,and the pressure ol water flowing through the inlets 15 and passing between the plugI and shell into the chain- I(ber-2() will hold the valve tightly closed against its seat. Rotation of the handle 10 in either direction will depress the d1sk 9 1n a manner to be set forth below, and its first,

movement is to push the stein 16 downward and positively open the valve, the water which has aeouinulated within the chamber 2() being forced out between the shell and plug in a direction opposed to the fiow of the water passing upward through the annular space around these elements, past the valve, and out the spout. 'l hus itY will be seen that the opening of the valve is retarded by the escape of water from the chamber 20, as water is incompressible. The parts then assume the position 'shown in Fig. 2, and when the handle is released the inflowing water again passes between the plug and shell and slowlyT 'fills the ehaniberl'20 and gradually closes the valve in a manner which will materially aid in the prevention of water hammer'. It ,should be observed that there is no tendency to create a vacuum in either the opening or eign ofthe devise, that bea monomers ld b the speed with which the water p ma'yf "lass t e annular space between the plug andvr ell, and thatthe onlyinlet to and escapefromsaid space is in' a direction ospposedto the'iiow of water through the device.

' :vany suitable means may be emf ployedfo'r depressing the. stem 16 to open the .5. valve, we prefer that illustrated` herein and x npplicption 288.489 filed by one of us Nov.

,pins 11a on w Whichis substantially the same as shown in That ist'o say, the handle 10 is .secured to a. shanlrS` which rojects through thllpf @mi.0i-thev cap 6 t at is screwed to theupwardshank extension la, and fast on the lower end of the-shank is a disk 9 which has on' its upper face a movable roller-way consisting of'an..annular track having a seriesV of u ndulations;4 within the upper end of the cap is a fixed roller-way comprising a similar 4track 7; and journaled on the shank beat alf speed, and the disk 9 impinges against' and bears downward on the upper end of the stem. The present application includes a slight-improvement over the other application in the detailed construction of the spider;to wit: Each roller 12 has the outer end of its bore countersunk as shown at 12a, and each pin 11a has its outer end initially countersunk as shown at 11b so that it may beu set or-riveted as shown at 11c and the hea thus formed will fit into the countersunlr portion 12el of the roller and prevent the latter from accidental displacement. This detail We consider of advantage in a device of this character where'the annular channel for l the rollers isnecessarily small, because it permits the use of rollers which occupy substantially the full width of the channel and hence have ,bearing surfaces as wide as possible, it prevents centrifugal movement of the rollers which Would cause them to scrape against the outer Wall of said channel, and `when the parts are disconnected it avoids accidental oss of the rollers. Moreover, in the'present 'instance we consider an upset end preferable to a nut, pin, or other detachable head because it cannot becomedisplaced while in use and thus fall onto the rollerway and clog the device to its possible injury. What is claimed as new is:

1. In a self-closing li uid'shut-oili, the combination with a coc valve seat, and a fixed plug therein on the inlet side of the seat of a shell opening toward theI inlet and slidably surrounding said plug, the shell having a closed partition, a valvel carried by the latter and adapted to seat, anda iixed than its bore and coated on the inlet sidey body having a:

erases engage saidseatfand means for the shell against the ressure to unssa the valve.' 2. In Aa self-c osiugliquid sh1t-oii, the

combination with ay coc-k'body h'a'ving a the shll being also smaller than said bore l and having a closed partition, a valve carried bythe latter and adapted to engage said seat,

and means for moving the shell against the y pressure to unseat the valve.

3. In a sei-closing liquid shut-oil", the combination with a cock body having a valve lug withinA and smaller of said seat, the end of the plug being cu ped of a shell opening toward the inlet an .slidably surrounding said plug, the shell being` also smaller than said bore and having a closed partition so that with said cup it forms 'a water chamber, a valve carried by the shell and adapted tov engage said seat, and means for moving the shell against the pressure to unseat the valve. 'i

4. In` a self-closing liquid shut-ot?, the combination with a cock body k,having a.

valve seat, and a fixed plug. therein'on the inlet side of the seat; of a shell opening `toward the inlet andv slidably surrounding said plugfthe shell ,having a closed partition, a' connection rising centrally from the latter" through said seat, `a valve surrounding the connection and held upon'the partition, and

means for depressing the connection to Vun-f seat the valve. f: ,v Y

5. In a Vself-closing `li uid shut-OL-:ithe combination with a cool; Valve seat, .and Aa xed 'plu therein. onthe inlet side of the seat.; of a s A body-1-.having1 a.

i195 611 snellire t0- ward the inlet and slidablysu-rrounding said plug, the shell having'a closed partition, a-

screw rising centrally from `the latter, a valve upon the partition aroundthe screw, Valve stem engaging the screw and lclamping the valve in place, and means for movingthe stem to unseat the valve.

6. In a sel-f-closing liquidshut-fo,

combination. with the cock bod having a valve seat beneath its spout, a v ve, af valve'.

stem, and a handle for moving the later in one direction only; of a shell within th ,bbdy and spaced from it to .leave anannulalr pas sage etween them, asolid `artition across the shell supporting the va the open end of the shell projecting toward the water inlet, a rigid connection between said partition and valvegstem, and a plu fixed in the base of the body, having latera inlet' openings, and projecting loosely into said shell and cupped at its" upper end, for the purpose set forth.

f7. `In a self-closing liquid shut-ofi, the

ve and leaving valve seat beneath its spout, and upward and downward extensions beyond its spout chamber, ay Valve stein guided inxtlie upward extension and having un'eiilarged lower end,

ineens for depressing seid stein, and e. vulve; i

of a shell within said downward extension and spiieed l`roin it so .iis to leere en annuler passage between their., n solid partit-ion across the vshell 'leaving its open end Vprojecting' to wurd the water inlet, e screw risingy from siiid partition sind hiking into the stein so es to clamp the valve between the partition und said enlarged lower end ol the stein, sind a lug' rigidly supported in the buse ol' the liodyflieving lateral inlets, und promieeriini loosely into said shell, for the purpose set forth.

In n self-elosiiie liquid shut-oli', the combination withV the cock body hui-'ing ii vulve sent beneath its spout, und upwzi-rd und downii'aiid extensions beyond its spout chamber-, e vulve stein havingr e shoulder, e eolliir supported by the shoulder und guided in the upward extension, e b); puss i'i'oin the ehiiinbeiin the latter io the spout. und. ii Valve; of :i shell within the downward exiinuular passage between iliein, the shell bei ing' elosedntits upper portion und haring' its open lower end direi-ted toward the wnter inlet, ineens for Clampingl the vulve between the elosed portion of the shell and the vulve stein, und u plusr mounted iiuidly in the base of the body, having' luternl inlets, und projeeiinL loosely into the open end of'tlie shell.

9. in :i sell-Closing liquid shut-oil', the combination with :i ooe-lr bodyv having :i vulve sent, und :i tubular plug iixed within its bore und liii'iig ln'ierel openings; ol' e shell sliin '-iibly surroundiing` the plug und dire-.ered toin the shell between the sent und plug, :i vulve oerried by sind partition :ind closed by the Water pressure, und external menus i'or unseatin'g" the vulve.

l0. in s self-closing liquid shut-off, the

combination with e, oook body having a valve sent, und tubular plug 'fined `within its bore tween the sent und plug und n Weill slidably surrounding the lutter und directed toward the inlet und with sziid oup forming :t Water elitiniber lor returdi ig the movements 0i the shell, :i valve enrried by seid partition on the side thereof opposite l'roin siiid ehziinber and adapted to be closed slowly by the water pressure, und external ineens for nnseeting the valve.

Il. in a. sell-iflosing liquid shut-oii`, the ooinbiniition with u cori: bodj,7 having n spout, e vulve seni between the spout and inlet, :ind a. iixed plug within its bore between the inlet und seiit; oll u shell slidiibly surrounding the plug with its open end directed toward the inlei, :i 'vulve carried by the closed end oi the shell between the plug and sent und :u'liipied to be sented slowly by the inlet pressure, und exierniil ineens for openi ing it ug'uinst seid i'ii'essiire. tension :ind spaced from it so :is to leave un in :i sellelosinr liquid shut-oil', the eonibinutioii with :i roi-li body having a spoui, :i valve sent beiween the spout und inlet, und zi lixed plug within its bore between Ithe inlet und sent; ol` n shell slidiibly surrounding the plugl with its open end directed toward the inlet, :i vulve carried by the closed end ol the shell between the plug sind sent :ind adapted to be sented slowly by the linlet pressure, :nid external ineens l'or opening it und siinultuneinisly moving the shell town-rd the plug;r iigi'iinst seid pressure.

ln testimony n'hfu'eol' we sign our naines in the presion-e ol' tuo subseribin; witnesses. wurd the inlet, a closed transverse partition 

